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#include "vkvg.h"
#include <gtest/gtest.h>
#include <filesystem>
//#define STB_IMAGE_IMPLEMENTATION
#include "stb_image.h"
//#define STB_IMAGE_WRITE_IMPLEMENTATION
#include "stb_image_write.h"
namespace fs = std::filesystem;
class BasicDrawTest : public testing::Test {
public:
VkvgDevice dev;
VkvgSurface surf;
fs::path targetDir;
fs::path diffDir;
protected:
BasicDrawTest() {
targetDir = fs::path(GTEST_PNG_ROOT) / ::testing::UnitTest::GetInstance()->current_test_suite()->name();
if (!fs::is_directory(targetDir) || !fs::exists(targetDir))
fs::create_directories(targetDir);
diffDir = fs::path("DiffImages") / ::testing::UnitTest::GetInstance()->current_test_suite()->name();
if (!fs::is_directory(diffDir) || !fs::exists(diffDir))
fs::create_directories(diffDir);
vkvg_device_create_info_t info{};
dev = vkvg_device_create(&info);
}
~BasicDrawTest() override {
vkvg_device_destroy(dev);
}
void SetUp() override {
surf = vkvg_surface_create(dev, 256, 256);
}
void TearDown() override {
vkvg_surface_destroy(surf);
}
void compareWithRefImage() {
fs::path targetPath = targetDir / ::testing::UnitTest::GetInstance()->current_test_info()->name();
targetPath.replace_extension(".png");
if (fs::exists(targetPath)) {
int w = 0, h = 0, channels = 0;
unsigned char *refImg = stbi_load(targetPath.c_str(), &w, &h, &channels, 4); // force 4 components per pixel
EXPECT_TRUE(refImg != nullptr) << "Could not load texture from " << targetPath << stbi_failure_reason();
EXPECT_EQ(vkvg_surface_get_width(surf),w);
EXPECT_EQ(vkvg_surface_get_height(surf),h);
unsigned char *img = (unsigned char*)malloc(w*h*4);
unsigned char *diffImg = (unsigned char*)malloc(w*h*4);
vkvg_status_t result = vkvg_surface_write_to_memory(surf, img);
EXPECT_EQ(result, VKVG_STATUS_SUCCESS);
uint32_t totDiff = 0;
for(int y = 0; y < h; y++) {
for(int x = 0; x < w; x++) {
unsigned char* refPix = refImg + (y * w + x) * 4;
unsigned char* pix = img + (y * w + x) * 4;
unsigned char* diffPix = diffImg + (y * w + x) * 4;
if (*refPix < *pix)
*diffPix = *pix - *refPix;
else if (*refPix > *pix)
*diffPix = *refPix - *pix;
else
*diffPix = 0;
totDiff += (uint32_t)*diffPix;
}
}
EXPECT_EQ(totDiff, 0);
if (totDiff > 0) {
fs::path diffPath = diffDir / ::testing::UnitTest::GetInstance()->current_test_info()->name();
targetPath.replace_extension(".png");
stbi_write_png(diffPath.c_str(), (int32_t)w, (int32_t)h, 4, diffImg, (int32_t)(4 * w));
}
free(img);
free(diffImg);
} else {
vkvg_status_t result = vkvg_surface_write_to_png(surf, targetPath.c_str());
EXPECT_EQ(result, VKVG_STATUS_SUCCESS);
GTEST_SKIP() << "Updating reference image: " << targetPath;
}
}
};
TEST_F(BasicDrawTest, CtxSolidPaintRGB) {
VkvgContext ctx = vkvg_create(surf);
vkvg_set_source_rgb(ctx,1,0,0);
vkvg_paint(ctx);
vkvg_destroy(ctx);
compareWithRefImage();
}
TEST_F(BasicDrawTest, CtxSolidPaintRGBA) {
VkvgContext ctx = vkvg_create(surf);
vkvg_set_source_rgba(ctx,1,0,0,1);
vkvg_paint(ctx);
vkvg_destroy(ctx);
compareWithRefImage();
}
TEST_F(BasicDrawTest, CtxSolidPaintWithActiveTransform) {
VkvgContext ctx = vkvg_create(surf);
vkvg_translate(ctx,100,100);
vkvg_rotate(ctx, 2.f);
vkvg_set_source_rgba(ctx,1,0,0,1);
vkvg_paint(ctx);
vkvg_destroy(ctx);
compareWithRefImage();
}
TEST_F(BasicDrawTest, CtxSolidPaintOver) {
VkvgContext ctx = vkvg_create(surf);
vkvg_set_source_rgba(ctx,1,0,0,0.5);
vkvg_paint(ctx);
vkvg_set_source_rgba(ctx,0,0,1,0.5);
vkvg_paint(ctx);
vkvg_destroy(ctx);
compareWithRefImage();
}
TEST_F(BasicDrawTest, CtxSolidPaintRectangle) {
VkvgContext ctx = vkvg_create(surf);
vkvg_set_source_rgb(ctx,1,0,0);
vkvg_rectangle(ctx,50,50,200,150);
vkvg_paint(ctx);
vkvg_destroy(ctx);
compareWithRefImage();
}
TEST_F(BasicDrawTest, CtxSolidPaintRectanglesOver) {
VkvgContext ctx = vkvg_create(surf);
vkvg_set_source_rgba(ctx,1,0,0,0.5f);
vkvg_rectangle(ctx,50,50,100,100);
vkvg_paint(ctx);
vkvg_set_source_rgba(ctx,0,0,1,0.5f);
vkvg_rectangle(ctx,100,100,100,100);
vkvg_paint(ctx);
vkvg_destroy(ctx);
compareWithRefImage();
}
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